import urllib.request

url = 'http://httpbin.org/'
headers = {
    'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) '
                  'Chrome/58.0.3029.110 Safari/537.3'}
req = urllib.request.Request(url, headers=headers)
response = urllib.request.urlopen(req)
data = response.read().decode('utf-8')
print(data)
